wiselder Posted March 25, 2017 Share Posted March 25, 2017 Has anyone been successful in making a ar15 gas gun work as a 9mm? What are the problems? Not enough gas? Link to comment Share on other sites More sharing options...
caspian guy Posted March 25, 2017 Share Posted March 25, 2017 It can be done... One place you might check with: http://www.rmwxtreme.com/#top Also http://thearguy.com/products-page/di-gas-operated-uppers There are others if you do a bit of research. The issue is getting enough gas pressure and dwell. To make it work you end up having to have a custom gas tube about 2" long and they end up loading medium to slow burn rate powder (at least according to one of the guys i talked to) to make it more reliable (bit like loading 9mm major) Link to comment Share on other sites More sharing options...
mscott Posted March 25, 2017 Share Posted March 25, 2017 I built one, but haven't gotten enough time to play with it. Seems to be a bit finicky feeding good from some mags and not from others. Mine is built on a Glock mag lower. Gas block is right against barrel nut and still have to load near major ammo for it to run. It is very nice to shoot, though. Bolt carrier had to be relieved to clear magazine feed lips and bolt face was opened up a little. Link to comment Share on other sites More sharing options...
Vespid_Wasp Posted April 7, 2017 Share Posted April 7, 2017 Years ago I saw a custom build that a guy had done with a gas operated 357 Sig AR-15. I can't remember a single thing about it other than that little tidbit. 9mm would be problematic to my way of thinking. Would be a neat project. Link to comment Share on other sites More sharing options...
Vespid_Wasp Posted April 7, 2017 Share Posted April 7, 2017 Found it:https://web.archive.org/web/20081120013456/http://sigforum.com/eve/forums/a/tpc/f/630601935/m/1731079131/p/1 Link to comment Share on other sites More sharing options...
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